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Finding the Fourth Proportional to 57,866.90, 86,799.42 and 18,423.45

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Solution

The fourth proportional to 57,866.90, 86,799.42 and 18,423.45 is: 27,634.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,866.90 : 86,799.42 = 18,423.45 : x
  2. Step 2: Convert to fraction form
    57,866.90/86,799.42 = 18,423.45/x
  3. Step 3: Cross multiply
    57,866.90x = 86,799.42 × 18,423.45
  4. Step 4: Simplify right side
    57,866.90x = 1,599,144,774.40
  5. Step 5: Solve for x
    x = 1,599,144,774.40/57,866.90
  6. Step 6: Final answer
    x = 27,634.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.